Administration of the MapR-DB is done primarily via the command line (maprcli) or with the MapR Control System (MCS). Regardless of whether the MapR-DB table is used for binary files or JSON documents, the same types of commands are used with slightly different parameter
options. MapR-DB administration is associated with tables, columns and column families, and table regions.

The MapR Data Access Gateway is a service that acts as a proxy and gateway for translating requests between lightweight
client applications and the MapR cluster. This section describes considerations when upgrading the service, how to modify
configuration settings, and how to administer and manage the service.

Wired encryption and authentication (including impersonation) for the MapR platform and all
supported ecosystem products are enabled for new installations through the MapR Installer.

You can enable security features at any time, but additional configuration is required for
the individual components to work with security enabled. This section discusses initial
configuration of a secure cluster as well as other forms of security.

The following access control elements are available whether or not your cluster security
features are enabled. Additionally, once security features are enabled, these elements
benefit from encrypted traffic within the cluster and strong authentication to the
cluster.

Access Control Lists (ACLs) for the cluster, the volumes in the cluster, and the
MapReduce application queue

Access Control Expressions (ACEs) control user permissions for directories, files, and
MapR-DB tables that are stored natively

File permissions for objects in the MapR-FS layer

Subnet whitelisting restricts access to the cluster's FileServer service

On clusters with security features enabled, ecosystem components may require additional
configuration. For example, Hive functionality has different security requirements
depending on the interaction between the HiveServer2 component, the Hive command-line
interface, and the Hive metastore.